Speed-indicator



J. BRANDSTETTER.

SPEED INDICATOR.

APPLICATION FILED MAR. 8. 1920.

1,354,278. Patent ed septfzs, 1920.

5 I i fjkg gemr T330 tion,;;andpartly because theyfweref not; Q equally suitable-for 11S Wl th phonographs Josef ianAnnsrnr E's, or on citizenof the United States,-. residing at Chicago, in the county ,OfyCQOkitlild State of Illinois, have invented certain new and useful Improvements in Speed-Indicators j and I Ido hereby declaref the following to hea full, clear, a-nd exact description, ofjthe inj vention, such as illenable othersskilled-in f the art to, which it aappertafinsv to make; and. ifuse'the samelw .j 1 c p 1-3; V invention relates to speed indicators panel-more particularly to the class; rinds cators adapted to showivwhen one or'another of certain predetermined speedsr hasjheen reached, its generaliobjects being to provide mes; ILLI f; mr lcog'orcn oaqq xnnmors faconronntrroir QDE AWARE.

' Be itjknown that I, Josnn "an unusually siniplefand accurate instru .ment for suchpurposes and OIIG'WlllClI can properly adjusting them at the factory,

easilybe readfrom ainumber of different d irections'.- Moreparticularly, my invention relates to an indicator, adapted to show Whether or :not'the spindle of" a phonograph is rotatingtat the speed-foriwhich the rec;v ords-weredesigned. jlfndicators =as hereto satisfactory; partly owing to a lack of ac fore oif ered for-this purposehave been unfcuracy, partly because of; the difiiculty in from convenient-positions when inqopera-V designed for operation at difierent ispeeds.

' Moreover," such speed-indicators as heretofore used with phonographshave interfered. with the movementkof the tone arm and re-{ pro ducer :to their normal. operativepositions, so that the testinggf thekspeedjhad to he done when themechanism was not; subj ected; to the added resistance] due to the drag of the; i needle on the record; and; the a speed shown by; the indicator wa fl therefore no.

criterion of the }-j'speed of the (phonograph Whenplaying airecord. ,To overcome this further obj ection; :iIljVQHt iQn alsogi aims to provide; an indicatorwwhich may; readily be employed while theoaphonoglfaph jis actually a pla ingaa recordand isithereforaQperating' jun er exactly normal; conditions. "Moreover;

ny invention aims to? provide 5 an indicator o -cl s whi z mn b ins n y tt c phonognaphwithout theiuseiqf tools, and to cator enibodying my invention, with a part otthehase'brokenaway to show the enga ge-fi ment' of 'the base with the spindle @offa partly becaus'e they could fnot easily be read spindle when tha indicate I i srnnninnroivron;

p stepmcam etterman:-' Patente d S ept; 28,1920. IJAppiicationj fl ed iviarch 8, 92 iS l N 6 L V I V i l following specificationland frointheaccom panying drawings, in whiche- Flgu e 1 s an elevat onyoif a? speed indiphonograph; and showing indicator as "it appeers in" use with the phonograph-playing a record. EL f g] ,1 a ,Eig.;2is a fragmentaryplan viewofthe sameq a Fig. 3 is ani enlarge d side ele vation of the indicating arm and 01'? partsassociated there-"l i h w th Part i t e wei ht and the i t; armin sections 1 r Fi 4, 8 a t nlargedisdtion ithrouhthe Weight on the, pivoted arm, taken along the w r ond ly l s q n Qf' 3- In thefgemloodiment of the drawings-,; the

having a Verticalbore adaptedto fit slidably 'duced indiaineter so-astowaflord a shoulder ior supporting a" crossbar. 6.1 The crossbar;

6 extends at right anglesf't'o the shaftand;

screws :8 affording antiJi'ri tiQI 'bQl' ilgST {of a lever 9. Th-1S lever deslrably has atransverse reach; suhstantiallyjihal- H I a m n m t s afterithernannershown in:l*ig.;2.'

The'pt {eiaend oi helever carr esa armofthe llever and d'fjthfe saidsteel indi 'slot. 19, i n the end 'direc teditbwardthespin "dle or reduced stem portion 5; of the indica "torfor receiving thelouter end of a blade of steel 10 which forms 'the'jInovable indicating portion of my appliance ThisEpointer lOi 1 desirably has its ,iiree endgforniedinto-a; -forlqlooselyfstraddlingthespi dle5 so as to f fay hroflniiffiliis 11 which? Inakes end joverhalance thecombined Weight of the inwardly directed eating blade. Thisil weight 11 isidesi 'ably' 7'5 indicator ofinventiomincludes a base 1f 7 adapted tobe setfeithe 'i:directlyion the-1&0? it ab O P I g' Ph-b n e n 1 tral pqrtionof a recbrd onsuch a table, and: p

80 over the spindlefl of the phonograph l Fast upon thebase and in axial alinelnent with the said boreanjd spindle isfagstern -45, fwh'ich stem desirably hasits upp rp'ortion 5 repermit of 'firInly clamping the Weig htin any? desired position and t'o avoid a, looseningro f J the when the indieator i's' being ha'nff dled, I desiithly make a couplefof oblique:

saw cu'ts'QO as extensions of the slet insthe weight, as shown in Fig. 4:, sothet the'porr.

tions of the weight whichstmddle the-outer jegeinst loosening. 'I, also desirebl prdvide' cz'ttih'gi painter when the indicaterf is {at est: lTheni clesi mblypryide the other endof the upper endof th'leyer with a leg; 13f adapted to engage the upwa 'dly directed arir'i 011" the gross bar; as shown in Fig,- 1', so'

as tijfl iniitthe upwat'dswinging oflthe indi the ci bsslhz'rr with a weight} 14 apprexi mately balancing the Qqpinbined Weights 6f the-leverf ztn'd the' weight, so that the app li ancens a'whole will ;be substantially bal aneed about the axis of its stem and spindle.

s Likewisegl se'c ufe the 'eress haifhgainst' rbtzh tion 1 0n 5 the said-stem by any snitahlemea'n's, h' M C Q l I f- T Vith'the indic'eltqr' in position as shown in F l,' "the*fii ctien hetween tlIG l Z S i 5:1: the applianc hnd'theiphenogmphp rtien edwhi'ch-th latter is v plaeed -wfll "ciiusethe indica'tor to 'fet ztte with 1 thefspindle :of the" phOn0gT2iph; this'fiictienbeingldesii'iibly incifeased by a fleyeijo fffelt en the bettemp'f thje ba'se'il, whiehfel t is "not shewn inthe d'rztwiii'g's', the indicator, revolves, the" effect of c ntrifugal "face on the weight 11} whi h hermsllygdepends b1 1 1e1y= d0wna wer new h p v e s 8 wil ng 1 this weight eutwz'fdly' oi'f 'i weyfgfr mete"; i ig to'fioelt theindic'ztting, lever {m'd te' move the indiczttingf afih' downward. Consequently, the'jpes'itieii oi the fork on this mmitn i; f t i dina'lly ofthe; spindle 5 M1 1 'depl ong he" 7 speed at which-the V appli'anee isl'ifotating; s o

" this" speed canberead from any'snittthl'e marking 9n" th'e'spindle' 5. Fen e ample, the stem 5"l1$L i; L 'gi bpyfe lfi so disposed (is-t0 be mmy dppesit'efthe forked :end' of the; inf eating am theme-e turntable, oe he- V l phonograph is read tite speed nf 78-revo1u-f fiO iS PB im, t?) i sgl n it the'riappfivafice'f til is Whet e ceffhe l e t ng?-fliee u i e Tet em y -sp e Or is "fefth emitting-mm will then aline fgi'eeye but will Q heir 7 g bgvethis gr'o'ojve: if r the speedisle-lower r and. below ith'is; grooye' if the speed is higher" Y Likew se, Imy "equipthe' st'emfi with a sec- OOiTe 171disposec1 ini lihe with the indi 1 by 'su itahly spacingfthe cross lbzir 6' frldin {the s'c'iihedflthelilidicator of my" inventiongin' "eai'fi'ed by the base'in el-ijfiem'ent with the niat a speedef 8'0 revolutions-pen straddling-13bit stem and 7 extends. half way around the V lattei, there aid the ep'pearence of a. flat' 'ring, which ring' 'sl i-ifts- -yertically es the speed variesjand' which'ring appears tobfe in theesame plane withene of the greoves whenthevspeedof end 'o f the leterle'en 'be sprung inwardly when they are being clamped against thefleve ',;and-s0 that the tendency of these'perts to I spl ing apart i'willi'loc'k the pivot? screw termined location ofgthis groove.

.Byi 1sing' an insertedextension of the leverj rotzitie n isthat eorresponding t6 the prede' ;as the indicating pertien ofthei lettefll can keepfdhwn the weight of t 'hi's zu ni; While giying itsiichflength as to affbrd a eonsidefehl'e in speed; and can therefere easily se'cnre the desired-I aic'eurecy' j Likewise,- by" using j teni ip'elied' steel to? this peiftien-I eanlprevent it .i'rom' 'lieing' bent; oiitfof s'h'ape even when the l 1 idevice is subjected Ito r'eugh'i handling.

Iiikewise;.while; the e 'djiistableimeiinting of" the weightisintended prilntrily fifi theiini fi Tamm -enem us qfm e plmnegt d6 sir'zthly nmke the spindle or: stem 5' se long as" to extend for some distaneeyebove-the uplpeifniest positif eh'f( if i the forked end" "of the indicating ermfsothgtt this prejectingytip of; the "sterhf Can he inmnally' grasped for placing my speed inCliCf'LtOr j in pesitio'n; r for-taking thesamebfi'the phpnogi aph, *even- 7 while the l'ztttei' flis' in operation. Mbreove'rg base, I p'errnit both this tress: {hex-and I-the weighted end efthe'leveif tq i' swing -above theton'eia fm 18 ofgt'he' ph0neg1aph,' so that: V I am ,atleqte make the desired} speed 3 test under; the; actuftl I :bp erating eonditiens of a 'phbnogfe'ph, namely with the latter" actually" d'ra-go'f the needle on the reeefdi' -Hew'ever, while i 'I have pictured} and 'de;

desizfahleembodiment including at -lever 1mg v ing' a thin steel blade 1 as its indie'ztting' fp e'r tion' endlincll'lding i highly desii able m'euntin f r 'fl wei ht 9 the I i d v o 2 wish to 'be limited te thesei'of other details Of the c'onstri e'tio'niandjzvrmngeinent thns "disclosed gQbyiusly,'yerious" changes; std- 7 1 ditions and 'emissiens; might-be inadewith-- tar i fro he sv' :o'f my mm tion olfl flfoiii'ftheitfppeilded claims"; J

' leiit'i esfrri' x'invention; it i 1 V i Inf-34: speed indicator 'foi' phonographs, V

"a1 1 base equipped with ,Ine'ans for engaging the indle of the henq m h table, a stem spindle e; transverse arm jfa'stein" the stern; and a wei'ghtedlever pivetedion the j f-ree end ni, the ",stem having ja" peripheral 'd 'the"leyeif hayini fa jfcirked end J s laptedt6 jail-int 130 with the groove in the stem when the lever is swung to a predetermined position by centrifugal action on the weighted portion thereof.

" 2. In a speed indicator for phonographs;

a base equipped forengagement-with the I spindle of the phonograph, a stem carried by thebase in alinement with the spindle and having a peripheralgroove,-atransverse pivot arm faston the stem at such a height above the base astoclear the tone arm of the phonograph-when the base is set upon a playing record, and a centrifugally I movable lever pivoted on the said arm and,

having an indicating portion directedftoward the said stem and adapted, to aline V with the said groove when the stem is r0"- tatingat a predetermined speed, and a balancing weight at theopposite end of the arm fromthat on which the lever is pivoted.

3. In aspeed indicator forphonographs, a supporting member adapted toise'at upon I the playing record and equipped for engaging the spindle of the phonograph, and a eentrifugally movable arm pivoted to the supporting member on an'axis spaced from i the axis of the spindle and above the path 1 stem having a lateral formation cooperating ofthe tone arm of the phonograph, the supporting member including an indicating stem alining with thesaid spindle, the said with the movable arm in showing when the a record is rotating at a predetermined speed.

4. In a speed indicator of the class described, a stem equipped with a lateral indicating formatiommeans for maintaining the stem axialof the object whose speed is to be indicated, a supporting element fast with respect to the stem, and a centrifugally actuated lever pivoted on the supporting ele- "ment ata' distance from the stem and presenting one end adjacent toth e stem, the said end of the lever having a flat arcuate tip adapted to be concentric of the stem and Y in the same plane with'the said formation on the stem when the; indicator is rotating at apredetermined speed, the arcuate exten sion of the said tip being such that the same will simulate a fiat ring visible from any direction above the indicator, whereby the speed indication can readily be judged from ring with respect to the said formation on the stem.

,5. A speed indicator for phonographs including a support engaging the spindle of thephonograph and having a stem alining with said spindle and a bearing portion lever and pivoted to the said outer arm the weight having slots in continuation of the gap of its forlnthereby permitting the fork to be sprung inwardly to clamp the same a securely to the outer arm of the lever.

Signed at Chicago, Illinois, March 1th,

" .iosEF RANDsTETTER.

the position of the plane of the simulated 

